alright dude,
what you've got to do is get her somewhere where the room is cold. turn the air way up and you're nips will get hard. keep your shirt on as long as possible. just stay occupied with kissing her. then after a while, your shirt comes off and then its time to rock. when your done, wait awhile, put your shirt and underwear back on and just lay there for as long as you please.
or
just get her in the car, put her seat back all the way and get on top. pull down her panties, drop your draws and get it on. this way you don't even have to take your shirt off.
you can probably tell that i've got some experience in this dept. anyway, good luck to ya brother!